At TIME, Alex Altman and Elizabeth Dias report on BCFS, a Baptist charity that runs facilities housing unaccompanied immigrant children. The charity, which began in 1944 as a home for orphaned children, has received $280 million in federal grants since December to run the shelters. Some voice concerns that the facilities are kept too heavily under wraps, but BCFS argues that they’re off-limits for security reasons. “As a result,” the authors write, “it’s hard to gauge the conditions under which thousands of children are being held, or to assess whether taxpayer money is being well spent.”